Hello all I am using a natural stone for my coping and they are not all the same thickness. Should I keep them level on the top and make up the difference in the grout line or leave them uneven on the top and grind/taper the edges where they meet each other and the paver deck? I am leaning toward keeping the top level, and adjusting the grout line between the tile and bottom of coping. What do you all think would look the best? Thanks for the quick responses!